rainbowsexual Share definition Flag A gay man who is so gay that he classifies his gender to be every color in the rainbow That man was so fruity, I wouldn't dought that he was one of them rainbowsexual people. rainbowsexual by Perry_the _platypus February 16, 2018 0 0 Get merch Get the rainbowsexual mug. Buy Now — $32.95 See more merch